Patients with Metacarpophalangeal joint contractures caused by Dupuytren's disease will be evaluated as to the timing of the finger manipulation procedure that is performed following collagenase injection. Three groups will be evaluated: group 1 will have the manipulation procedure on the day following collagenase injection, group 2 will have the manipulation procedure on the second day following collagenase injection,and group 3 will have the manipulation procedure on the fourth day following collagenase injection,